﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BaseStructure
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = 1;
            int b = 2;

            // 用类YL声明一个对象y111
            YL y111 = new YL();

            // 用对象调用方法， y111.Add
            int result = y111.Add(a, b);

            Console.WriteLine(result);
        }
    }
}
